Well-boring drill



Patented June 2, 1925.

lUNITED STATES MICHAEL J. HANNAN, 0F MARIETTA, OHIO.

WELL-BORING- DRILL.

Ap'pncann med January 7, 1925. serial No. 1,026.

To all whom it 'may concern:

Be it known that I, MICHAEL J. HANNAN, a citizen of the United States, residing atl Marietta, in the county .of lVasl1ington--and State oi Ohio, have invented certain new and useful lmproven'ients in lVell-Boring Drills, ot' which the following isa. specification, reference being had therein to the acconipanying drawing.

This invention has relation to drills for boring oil, gas and other wells, and has for its object to provide means, constituting part of the drilling bit, for kneading or stirring up. the earth, sand or loam, cut out and loosened by the bit, with the water supplied to the well during the boring operations, so as to reduce the earthy material to the consistency of soft mud, which will not impede the drillingr operations, and which' will facilitate the removal of the bit from the well at intervals as the work progresses, with the accumulated dbris. A

A further object of the invention is the provisionof means for maintaining the bit in a central, upright position, at the bottom ot' the well, when the connecting rods or shaft sections are detached, so that the latter may be readily recoupled to the bit thus avoiding the diili'culty occasioned, as is often the case, by the tilting of the bit in the Well, and the displacement from a central, accessible position of the threaded pin or'bolss, by which the lower section of the connecting rod is attached to the bit. n

With the above stated, 'special object in view, my invention consists of a drilling bit having the features of construction and arrangement hereinafter particularly described and claimed. i

ln the accompanying drawing Figure l is a tace view ot' a drill bit embodying my invention, positioned in a well.

Figure 2 is a similar edge View.

Figure 3 an upper lend view of the drill, and

Figure e is a perspective view ot the upper part of the bit.

l, designates a drilling bit comprising the flattened lower part 2 preferably grooved or channeled on its llattened surfaces, and iormed with a suitable lower cutting, chisellike edge.

labove the flattened portion 2 the drill is contracted to form a shank 3, preferably flattened on opposite sides to coincide with the liattencd sides oi' the part 9;.

Above the shank 3, the drill is further contracted to form a neck 5, which terminates with 'the usual conical screw threaded connecting'end part 6. The neck is recessed on opposite sides to form shoulders 8,I for the engagement of a grab, in case the bit becomes disconnected from. the drill rods.

The special feature constitutingmy invention consists of the laterally projecting lugs 7, 7, formed as a part of and extending radially. from the flattened sides of the shank 3, and which run' or project crosswise of or at right angles to the planes of the flattened sides of the part 3, and above the channels or ooves. I

'lhe drill is made of oblong shape in cross section and channeled in its flattened faces, so as to facilitate the lateral cutting operations of the drill and provide clearance spaces for the passage of the material removed from the sides of the well.

The lugs 7, 7, project toa distance, b etween their outer ends, substantially equal to the Width of the flattened portion of the bit, so as to reach the walls' of the Welland, While the drill is being rotated, to thoroughly knead and mix` the accumulated moistened debris, and prevent it from becoming impacted around the drill.

As the lugs 7 7 reject to an extent equal to the greater Wi th of the bit, the latter will be therefore supported at all times in an upright position, by the contact of the ends of `the lugs with the walls of the well, and hence the upper section or stem of the bit will be easily accessible for the purpose of attaching thereto ylthe` connecting rod or shaft through which the drill is operated, or for the` engagement of a grab as above mentioned, with tlhe shouldered part of the neck of the stem.

l claim: y

l. A well boring drill, consisting of a llattened and vertically channeled bit with a contracted shank rising therefrom and provided with means for connection to a drill rod, said shank having a pair of radially attached projecting lugs formed thereon below the upper end iof the shank above the bit and at right angles o the flattened sides of the bit, said lugs being tree at their outer ends and extending substantially the width of the bit and arranged and adapted to thoroughly stir and min together the particles olf' earthy material `bored and separated by the bit.

ll@- l 2. A Well boring drill, consisting of a bit and a shank, provided With `separable means for attachment to a .drill rod, the bit beingr of oblong shape in cross section and the shank provided with horizontally projected free. ended lugs located below its upper end and above the body of the bit and extending substantially the Width of the bit, said lugs being:v adapted to stir and mix the material removed by the bit during` the drilling operation and to maintain the bit in a central upright position, when the driling rod is disconnected.

3. A well boring drill, having a bit of oblongr shape in cross section, with a stem which is detachable from the drill'rod, and provided with stirrers or beaters, located above the bit and below the upper end of the shank, said beaters being disposed crosswise oi the flattened sides of the bit, and forming an integral part thereof, said lugs 'being arranged and adapted to loosen, stir and mix the material cut by the bit and tending to lodge in the space around the shank of the bit, and said lugs being free and disconnected at their outer ends and extended substantially the Width of the bit.

4. A well boring drill, consisting of a longitudinally channeled bit of oblong shape in cross section, with a contracted shank, adapted for attachment to and detachnlent from the drill rod'and having,- laterally projectingr lugs forn'iedthereon and located at right angles to the sides otthe bit, and below the upper end ol the shank, the outer ends ot'v said lugs being i'ree and disconnected, so as to constitute beaters or stirrers of the earthy material cut by the drill, and the stein formed with recesses and shoulders, above the said lugs for the attachment of a grab.

MICHAEL J. 'HANNAN 

